Finding the Fourth Proportional to 12,926.61, 19,390.01 and 7,080.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,926.61 : 19,390.01 = 7,080.03 : x
2. Step 2: Convert to fraction form
   12,926.61/19,390.01 = 7,080.03/x
3. Step 3: Cross multiply
   12,926.61x = 19,390.01 × 7,080.03
4. Step 4: Simplify right side
   12,926.61x = 137,281,817.10
5. Step 5: Solve for x
   x = 137,281,817.10/12,926.61
6. Step 6: Final answer
   x = 10,620.09